The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 01, 1976
Filed:
Aug. 07, 1974
Melvin Berkenblit, Yorktown Heights, NY (US);
Robert O Lussow, Hopewell Junction, NY (US);
Arnold Reisman, Yorktown Heights, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A glass composition comprises a low glass transition temperature glass and a higher glass transition temperature glass, which glasses are uniquely capable of forming together a continuous vitreous phase over their entire compositional range. During thermal cycling, the low glass transition temperature glass flows out and solubilizes the higher glass transition temperature glass to thereby synthesize in situ a new glass. The low glass transition temperature glass is composed of 14.1% SiO.sub.2, 72.8% PbO, 12.5% B.sub.2 O.sub.3, 0.2% Al.sub.2 O.sub.3, 0.1% CaO, 0.2% Na.sub.2 O, and 0.1% MgO, and the higher glass transition temperature glass is composed of 71.11% SiO.sub.2, 2.38% Al.sub.2 O.sub.3, 7.13% CaO, 14.45% Na.sub.2 O, 3.76% MgO, 0.30% of K.sub.2 O, 0.13% B.sub.2 O.sub.3, and 0.74% PbO.